Geometric Constructions

A construction is a spatial arrangement of different geometric shapes.
Often the relative positions of the shapes are determined by an algorithmic
description, or the arrangement determines another shape implicitly.

For example, incidence relations in projective geometry, shapes determined
as intersection of other shapes, or special configurations on other models.

References

Technical
Note

As a guide, meshes should have no holes, no degenerate triangles and
elements, no duplicate vertices. Surfaces should have meshes with an adjacency
relation.